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The genera of Leguminosae-Caesalpinioideae & Swartzieae

L. Watson and M.J. Dallwitz

Icuria Wieringa

Type species: I. dunensis Wieringa.

Habit and leaf form. Small to large arbres (with straight, cylindrical trunk and no buttresses); inermes.

Feuilles composées; pennées; paripennées. Folioles peu nombreuses sur chaque feuille (1–2 jugate); opposées ou sub-opposées (not apically emarginate); sessiles à sub-sessiles; notablement asymétriques à la base to symétriques ou presque à la base; the leaflets more or less pinnately veined, pinnately veined (which is more or less displaced towards their inner sides); sans nervure marginale continue. Stipules absents ou rapidement caduques ou très rudimentaires (caducous); ni foliacées ni épineuses; pas connées (the margins valvate, joined only by hairs). Stipelles absents.

Inflorescence and floral morphology. Inflorescences axillaires (at the terminal nodes); the inflorescences complex; constituées d'unités racémeuses; paniculées (in compound racemes, the flowers almost sessile in a series of clusters). Bractées glabrous within. Bractéoles présentes; relativement grandes et enveloppant les boutons; persistantes au-delà de l'anthèse; basally soudées.

Fleurs hermaphrodites and unisexuées (some male, others bisexual); pas entièrement pentamères; se démarquant de la pentamérie dans le calice, dans la corolle, and dans l'androcée. Hypanthe présent (but very short), or absent. Perianth more or less absent (usually), or comprising distinct calyx and corolla, or exclusively sepaline. Calice 0 partite, or 1 partite (with only the adaxial member sometimes present); ne couvrant pas le reste de la fleur en bouton; very reduced. Corolle obscurely présente, or absente; pétales 0, or 1; incluant des pétales fortement réduits to sans aucun pétale fortement réduit; sometimes inconspicuously monopétale (usually wanting, but sometimes represented by a single vestigial lateral). Pétales onguiculés absents; blanc. The androecium comprising 6–8 members; androcée ayant des éléments soudés (the stamens all shortly joined basally); androcée ayant des éléments tous plus ou moins égaux en longueur; androcée sans staminodes. Étamines fertiles 6–8. Anthères attachés nettement au dessus de la base du connectif; déhiscence longitudinale (without dorsal teeth). Ovaire shortly stipité (both stalk and ovary completely velvety, and the style inserted eccentrically); libre. Le stigmate s'est dilaté (more or less mushroom-shaped). Ovule(s) peu nombreux (1–3).

Fruit, seed and seedling. Fruit une gousse bi-valvaire (fairly conspicuously beaked). Fruit avec des nervures proéminentes, en relief; avec des nervures proéminentes majoritairement longitudinales (the valves reticulately veined, and with the strong lateral nerve running above the middle of the valve). Graines pas arillées. Cotylédons épigés (the first seedling leaves opposite).

Species number and distribution. 1 espèces (I. dunensis). Confined to the central coast of Mozambique.

Tribe. Detarieae; Amherstieae clade of Bruneau et al. (2008).

Miscellaneous. Illustrations: • I. dunensis: Wieringa (1999).

We advise against extracting comparative information from the descriptions. This is much more easily achieved using the DELTA data files or the interactive key, which allows access to the character list, illustrations, full and partial descriptions, diagnostic descriptions, differences and similarities between taxa, lists of taxa exhibiting or lacking specified attributes, distributions of character states within any set of taxa, geographical distribution, and classification. See also Guidelines for using data taken from Web publications.

Cite this publication as: ‘Watson, L., and Dallwitz, M.J. 1993 onwards. The genera of Leguminosae-Caesalpinioideae and Swartzieae: descriptions, illustrations, identification, and information retrieval. In English and French. Version: 22nd March 2017.’.